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Rotary Switches

Rotary switches are a type of switch operating on manual control, which may be operated in order to provide electrical control to a given circuit. They are typically used in applications where only one circuit is to be operated at a time, and where more than one control switch is needed. When operated in conjunction with pushbutton, toggle, or other switches, rotary switches are often used to route power to any given circuit.

51KST30-01B06N application field and working principle

The 51KST30-01B06N rotary switch is a low-current, SPDT (Single Pole Double Throw) switch made from copper soldered onto a brass base. It is highly suitable for a number of applications, such as small motor controls, switches for controlling power, low-power medical devices, and for other industrial and general-purpose uses.

The switch works by rotating the actuator through a range of 100 degrees in either direction. This operation drives a cam that either opens or closes the contacts inside the switch — thus routing power to the desired circuit(s). The cam is usually operated using a finger pressure applied with a hand wheel or rotary knob.

The switch is especially suitable for low-current applications as it is able to route current up to 0.36 Amperes at up to 25 Volts DC — and as high as 2 Amperes at 125 Volts AC (8W resistive load).

The 51KST30-01B06N is also designed with a special keyway, which ensures that it cannot be inadvertently rotated when not in use — and thus prevents the inadvertent switching of power.

In addition to its low-current routing capability, the switch is also designed to be compatible with a variety of other devices, such as relays and other switches. This ensures that it can easily be incorporated into a bigger circuit, allowing for a more comprehensive control system.

Finally, the switch is also designed to be durable, possessing double wipers and wipe-proof contacts. This means that the switch is able to last for many years, despite repeated use.

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